diff --git a/pkgs/applications/system/monitor/default.nix b/pkgs/applications/system/monitor/default.nix
index 014413499c82..3b3f1da1309a 100644
--- a/pkgs/applications/system/monitor/default.nix
+++ b/pkgs/applications/system/monitor/default.nix
@@ -62,6 +62,11 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Manage processes and monitor system resources";
+    longDescription = ''
+      Manage processes and monitor system resources.
+      To use the wingpanel indicator in this application, see the Pantheon
+      section in the NixOS manual.
+    '';
     homepage = "https://github.com/stsdc/monitor";
     maintainers = with maintainers; [ kjuvi ] ++ pantheon.maintainers;
     platforms = platforms.linux;